Metallic packing for rocking or rotating rods or shafts.



110140358 V PATENTED JAN. 1, 1907.

. I A. D. MORRIS." METALLIG- PACKING FOR ROGKING OR ROTATING RODS 0R SHAFTS.

APPLICATION FILED 0OT.11. 1906.

. surround the same.

UNITED STATES PATENT OFFICE.

ALFRED D. MORRIS, OF PHILADELPHIA, PENNSYLVANIA. METALLIC P ACKlNG FOR ROCKING 0R ROTATING RODS 0R SHAFTS.

Specification of Letters Patent.

Patented Jan. 1, 1907.

T0 all whom, it may concern:

Be it known that I, ALFRED D. MORRIS, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Metallic Packing for Rocking or Rotating Rods or Shafts, of which the following is a specification.

The object of my invention is to prevent the grooving or cutting of the rod by the action thereupon of the packing-rings which This object I attain by clamping the rings so firmly to the rod that they will partake of the rocking or rotating movement of the latter, the end faces of the rings having sliding contact with the portion of tpe fixed structure surrounding the rod or sha t.

In the accompanying drawings, Figure 1 is a longitudinal sectional view of a stuffing-box for a rocking or rotating rod or shaft, said stufling-b0x being provided with metallic packing constructed in accordance with my invention. Fig. 2 is a transverse section on the line a a, Fig. 1. Fig. 3-is a transverse section on the line b b, Fig. 1 and Fig. 4 is a longitudinal section of ing-box equipped with my improved rodpacking. I

The great objection to the use of fibrous or metallic packing in connection with rods or shafts having rocking or rotating movement is the grooving or cutting of the rod due to the pressure of the packing thereon, the pac ing being ordinarily held against rotating movement and the frictional wear of the packing upon the rod being constantly exerted at the same point. This objection is particularly evident when the shaft rotates at a high rate of speed, as in the case of the modern turbine-engine. My invention has therefore been designed with the view of overcoming this objection.

In Figs. 1, 2, and 3 of the drawings, 1 represents partof the head or other portion of a cylinder, valve-chest, or other structure having an internal member with rocking or rotating rod 2, which projects beyond the fixed structure and which must therefore be provided with packing to revent the escape of steam or other motive uid around the same. The stufling-box casing 3 is rigidly bolted to the head 1 and contains any available form of metallic packing having contractile rings,

another form of stuff-- posed end to end and bearing upon the rod or shaft, and an outer ring 6, which envelops the pair of internal rings, each of the rings 4, 5, and 6 being composed of segments so disposed that the rings break joint with one another, as shown in Fig. 2.

Surrounding the outer ring 6 is a split ring 7, which has a normal tendency to contract, and thereby press the inner rings 4 and 5 firmly into contact with the rod 2, said split ring 7 being so heavy and its contractile force being so great that the complete ring structure is caused to partake of the rocking or rotating movement of the rod or shaft, overcoming the friction due to contact of the inner rings 4 and 6 with the outer face of the head 1, against which they are held in contact by the action of the spring-pressed follower 9. By reason of this construction frictional wear of the rod, due to its rocking or rotating movement, is entirely eliminated, the wear being wholly upon the inner ends of the rings 4 and 6, which can be readily replaced when necessary.

The spring-pressed follower 9 rotates with the packing-rings, and to insure such rotation a pin 10 upon one of the ring-segments may project into a corresponding opening in the ring 9, as shown in Fig. 1. To prevent torsion of the spring or the scraping of one end of the same against its contact-face on the ring 9, said spring is caused to rotate with the ring 9 and imparts rotating movement to an outer follower 12, between which and the inner face of the cap of the stuffingbox is interposed an antifriction device consisting of a ring 13, carrying balls 14, which contact with the inner face of the stuffingbox and with the outer face of the ring 12, as shown in Fi 1.

In Fig. 4 have illustrated the application of my invention to a stuffing-box in which the packing-rings 4 and 6 contact with the cap 3*- of the stuffing-box casing, the springpressed follower and its appurtenances being interposed between the inner faces of the rings and the head 1, in which case the pressure of the steam or other motive fluid aids the split ring 7 and follower 9 in maintaining contact of the pack ng-rings, respectively, with the rod and stuffing-box cap.

I claim 1. A metallic packing for a rocking or rothe packing shown in the present instance tating rod or shaft, said packing consisting having a pair of internal rings 4 and 5, disof IIC said rod or shaft and partaking of the movement of the same, a contractilemember of said ring structure haviru sliding contact at one end with a portion of the structure surrounding the rod or shaft.

2. A metallic packing tating rod or shaft, said packing having contractile rings, and a split ring enveloping the same and serving to confine them so tightly to the rod or shaft that they partake of the movement of the same, one end of the ring structure having sliding contact with a portionof the structure surrounding the rod or shaft.

3. A metallic packin for a rocking or rotating rod or shaft, sai packing comprising a contractile-ring structure surrounding the shaft, means for confining said ring structure so firmly to the rod or shaft that it will rock or rotate therewith, and a spring-pressed follower acting upon one end of the rin structure and serving to press the other end for a rocking or roof the same into contact with a portion of the fixed structure surrounding the rod or shaft.

'4. A metallic packing for a rocking or rotating rod or shaft, said packing consisting of a contractile-ring structure confined to the rod or shaft so as to artake of the movement of the same, a follower whereby said ring structure is pressed into contact with a portion of the fixed structure surrounding the rod or shaft, a spring for acting upon said follower, and an antifriction-bearing between said spring and a portion of the fixed structure opposed to that against which the packing-rings bear.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALFRED D. MORRIS.

Witnesses:

HAMILTON D. TURNER. KATE A. BEADLE 

